Fastest rails mail devise Welcome mail sending function implementation action mailer unnecessary Easyest

【goal】

Send mail using mailer when registering as a devise user (welcome mail) Reference: https://web-camp.io/magazine/archives/19143 Reference: https://freesworder.net/rails-mail/

【merit】

■ Improvement of UX ■ Improved application perfection

【Development environment】

■ Mac OS catalina ■ Ruby on Rails (5.2.4.2) ■ Virtual Box:6.1 ■ Vagrant: 2.2.7

【Implementation】

Create application

mac.terminal


$ rails new mail

$ cd mail

gemfile added

In the app.gemfile


gem 'devise' #Skip emails when registering as a devise member
gem 'dotenv-rails' #Used for environment variables. Details will be described later

Return to the terminal and create various things

mac.terminal


$ bundle install #Install gemfile

$ rials g devise:install #Initialize devise

$ rails g devise User 

$ rails g devise:views

$ rails g devise:controllers users

Edit DB, migrationfile and remove the comment below.

db/migrate/xxxxxxxxxx_devise_create_users.rb


# Confirmable
      t.string   :confirmation_token
      t.datetime :confirmed_at
      t.datetime :confirmation_sent_at
      t.string   :unconfirmed_email # Only if using reconfirmable

edit model

user.rb


class User < ApplicationRecord
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable, :confirmable ← added

end

Add the .env file to the root directory and add the following

/.env


mail = 'Your gamil address'
password = 'Password application required'

Create and edit config / initializers / mail_config.rb

config/initializers/mail_config.rb


ActionMailer::Base.delivery_method = :smtp
ActionMailer::Base.smtp_settings = {
  address: 'smtp.gmail.com',
  domain: 'gmail.com',
  port: 587,
  user_name: ENV['mail'],
  password: ENV['password'],
  authentication: 'plain',
  enable_starttls_auto: true
}

Edit view / users / mailer / confirmation_instructions.html

confirmation_instructions.html



##It can be changed arbitrarily and the content of the email will be changed.

<p>Welcome <%= @email %>!</p>

<p>You can confirm your account email through the link below:</p>

##So far


<!-- <p><%#= link_to 'Confirm my account', confirmation_url(@resource, confirmation_token: @token) %></p> -->
#Comment out,Because it is unnecessary this time

To the terminal again

mac.terminal


$ rails db:migrate

$ rails s -b 0.0.0.0

The email should have been sent when you registered as a user.

It took about 3 hours via action mailer etc. It was easier to implement than I expected.

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